A cable branch box

Abstract

The present invention discloses a cable branch box, comprising a box body and a box door, and a first hinge and a second hinge rotatably connecting the two, wherein a limit block and an adjusting block are provided in the first hinge, a baffle and a guide groove are provided on the limit block, the second hinge is provided with a stop block and a pressure rod, and the second hinge is also provided with a guide block that is inserted into the guide groove and cooperates with the box door. After the box door is rotated, the stop block is driven by the second hinge to pass over the baffle and engage above it. At the same time, the guide block abuts the guide groove and causes the limit block to move toward the inside of the first hinge until it is abutted by the adjusting block. After that, the rotation of the box door is limited to a certain range, so as to facilitate maintenance and inspection inside the box. After rotating to change the positions of the adjusting block and the stop block, the rotation range of the box door can be changed. After pressing the pressure rod inward, it abuts the limit block to move toward the inside of the first hinge and drives the baffle to move inward so that it is no longer abutted by the stop block. After that, the box door can be completely closed downward.

Description

Technical Field

[0001] The invention belongs to the technical field of power transmission and distribution, and in particular relates to a cable branch box. Background Art

[0002] A cable branch box is a device used to branch, connect, and distribute electrical energy within a power system. Equipped with protective devices such as circuit breakers and fuses, it distributes power from the main cable to multiple branch cables, ensuring the safety and stability of the power supply system. It plays a vital role in modern urban power grid construction and is widely used in residential communities, commercial centers, industrial areas, and other settings.

[0003] The cable branch box mainly consists of two parts: the door and the box body. The door is mostly fixed to the box body by hinges. After the door is flipped up from both sides to open, the internal devices or cables of the box can be repaired and inspected. However, in actual use, when the door is opened, it is mainly supported and fixed by the friction provided by the hinges. It is easy to be affected by external forces and closed, affecting the normal maintenance of the cable branch box. In addition, during the opening process of the door, the operator cannot limit the opening angle, and the door is easy to open excessively, affecting normal maintenance. Summary of the Invention

[0004] The existing cable branch box has poor stability after opening its door and cannot limit its opening angle, which makes it inconvenient for maintenance and inspection. To solve this problem, the following invention is proposed:

[0005] A cable branch box comprises a box body and a box door, wherein the box door is rotatably installed on the side of the box body through a connecting hinge, the connecting hinge comprises a first hinge and a second hinge that are rotatably connected, the first hinge is fixedly connected to the box body, and the second hinge is fixedly connected to the box door, a limit block is provided in the first hinge, which is elastically connected to it in the axial direction and cannot rotate, an adjustment block threadedly connected to the first hinge is provided at intervals on the inner side of the limit block, a baffle and a guide groove are provided on the limit block, a stopper is threadedly connected to the second hinge, a pressure rod that conflicts with the limiter is movably provided in the stopper, and a guide block that fits and is inserted into the guide groove is also provided on the second hinge.

[0006] After the door is opened upward, the second hinge rotates relative to the first hinge, and the stop block rotates to contact the baffle and engage above it. At this time, the door has a minimum opening angle. At the same time, the guide block contacts the guide groove and causes the limit block to move toward the inside of the first hinge until it is blocked by the adjusting block. At this time, the door has a maximum opening angle. After rotating to change the positions of the adjusting block and the stop block, the maximum and minimum opening angles of the door change accordingly. After pressing the pressure rod inward, it contacts the limit block and moves toward the inside of the first hinge, driving the baffle to move inward and no longer blocking the stop block. After that, the door can be completely closed downward.

[0007] Furthermore, the first hinge further includes a first sleeve, the first sleeve is threadedly connected to the adjustment block, and the limit block is elastically connected to the first sleeve via a spring; the second hinge further includes a second sleeve, and the second sleeve is threadedly connected to the stop block.

[0008] Furthermore, a connecting groove is provided on the first sleeve, a connecting shaft rotatably connected to the connecting groove is provided on the second sleeve, a strip block is provided on the inner side of the connecting groove, and a strip groove matching the strip block is provided on the side of the limit block to prevent the limit block from rotating relative to the first sleeve.

[0009] Furthermore, an annular groove is provided on the limit block, the baffle is located on the inner side of the annular groove, the stop block is provided with a stop head inserted into the annular groove, an arc surface is provided on the baffle, and a guide inclined surface facing the bottom of the baffle is provided on one side of the stop head. After the stop block rotates with the second sleeve, the guide inclined surface of the stop head will contact the arc surface and push the limit block to move elastically toward the inside of the first sleeve until the stop head passes over the baffle, and then the limit block moves outward under the elastic force, driving the baffle to engage under the baffle.

[0010] Furthermore, a first guide surface is provided in the guide groove, and a second guide surface matching the first guide surface is provided on the guide block, so that the guide block can be inserted into the guide groove as a whole. After the second hinge rotates relative to the first hinge, the first guide surface contacts the second guide surface, pushing the limit block to move toward the inside of the first hinge.

[0011] Furthermore, the stop block is provided with a first slot facing outward, and a positioning block is provided on the outside of the first slot, which contacts the stop block, so as to prevent the stop head from rotating relative to the second hinge during the inward movement of the baffle plate. The positioning block is provided with a second slot facing outward, and an outer sealing plate is provided on the outside of the second slot to separate it from the outside world. After removing the outer sealing plate, the stop block and the positioning block can be quickly rotated through the first slot and the second slot.

[0012] Furthermore, the adjustment block is also provided with an adjustment plate located outside the first sleeve, and the adjustment plate is provided with a plurality of protrusions arranged in a ring shape; one end of the pressure rod passes through the outside of the second sleeve, and the other end is provided with a pressure head connected to the center of the limit block, and the pressure head is indirectly elastically connected to the first hinge through the limit block.

[0013] Furthermore, a first matching groove for accommodating one end of the stopper is provided on the inner side of the connecting shaft, and a second matching groove for accommodating the pressure head is provided on the inner side of the stopper to maintain the stability of the stopper and the pressure head during the rotation of the second hinge.

[0014] The present invention proposes a straight cable branch box, which has the beneficial effect that when the box door is opened, the block and baffle in the hinge limit the minimum opening angle of the box door, and the limit plate and the adjustment head limit the maximum opening angle of the box door. By rotating the block and the adjustment head, the minimum and maximum opening angles of the box door can also be changed, which is convenient for technicians to carry out maintenance and prevents the box door from being damaged due to excessive opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the three-dimensional structure of the cable branch box in the present invention;

[0016] Figure 2 Schematic diagram of the three-dimensional structure of the connecting hinge in the present invention;

[0017] Figure 3 Schematic diagram of the three-dimensional structure of the first hinge in the present invention;

[0018] Figure 4 Schematic diagram of the internal structure of the first hinge in the present invention;

[0019] Figure 5 Schematic diagram of the three-dimensional structure of the second hinge in the present invention;

[0020] Figure 6 Schematic diagram of the split structure of the second hinge in the present invention;

[0021] Figure 7 Schematic diagram of the internal structure of the second hinge in the present invention.

[0022] The corresponding relationship between the illustration labels and component names in the figure is as follows:

[0023] 1. Box body; 2. Box door; 3. Connecting hinge; 4. First hinge; 5. Second hinge; 6. Limit block; 7. Connecting shaft; 41. First sleeve; 42. Adjusting block; 43. Adjusting plate; 44. Bump; 45. Spring; 46. Strip groove; 47. Connecting groove; 51. Second sleeve; 52. Stop block; 53. Guide slope; 54. Press rod; 55. Press head; 56. First slot; 57. Second slot; 58. Positioning block; 59. Outer sealing plate; 60. Stop head; 61. Annular groove; 62. Baffle; 63. Arc surface; 64. Guide groove; 65. First guide surface; 66. Strip block; 71. Guide block; 72. Second guide surface; 73. First matching groove; 74. Second matching groove. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with embodiments.

[0025] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work should fall within the scope of protection of this application.

[0026] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, for the purposes of describing the embodiments of the present application herein.

[0027] In addition, the terms "comprises" and "having" and any variations thereof are intended to cover a non-exclusive inclusion. For example, a process, method, system, product or apparatus that includes a series of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, product or apparatus.

[0028] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0029] like Figure 1-Figure 7As shown, it is a preferred embodiment of the present invention, a cable branch box, including a box body 1 and a box door 2, wherein the box door 2 is provided with two and is rotatably installed on both sides of the box body 1 through a connecting hinge 3, and the connecting hinge 3 includes a first hinge 4 and a second hinge 5 that are rotatably connected, the first hinge 4 is fixedly connected to the box body 1, and the second hinge 5 is fixedly connected to the box door 2, and the operator can flip the box door 2 upward to open it for maintenance and inspection inside the box body 1. A limit block 6 and an adjusting block 42 are provided in the first hinge 4. The limit block 6 is elastically connected to the first hinge 4 in the axial direction and cannot be rotated. The adjusting block 42 is spaced apart on the inner side of the limit block 6 and is threadedly connected to the first hinge 4. A baffle 62 and a fan-shaped guide groove 64 are also provided on the limit block 6; a stop block 52 and a pressure rod 54 are provided in the second hinge 5. The stop block 52 is threadedly connected to the second hinge 5 and a stop head 60 is provided at the end. The pressure rod 54 is movably provided on the inner side of the stop block 52 and a pressure head 55 is provided at one end to conflict with the limit block 6, thereby indirectly realizing the elastic connection between the pressure rod 54 and the first hinge 4. A guide block 71 with a fan-shaped arc and inserted into the guide groove 64 is also provided on the second hinge 5.

[0030] When the second hinge 5 is opened from the side of the box body 1, the second hinge 5 will rotate relative to the first hinge 4. During this process, the limit block 6 will not rotate relative to the first hinge 4, and the stop block 52 will rotate with the first hinge 4. During the rotation of the stop block 52, the stop head 60 will abut the baffle 62 to drive the limit plate to elastically move toward the inside of the first hinge 4. After the stop head 60 passes over the baffle 62, the limit block 6 is driven by the elastic force to move toward the outside of the first hinge 4, and the baffle 62 engages the stop head 60 from below. At this time, the second hinge 5 cannot rotate toward the closing direction of the box door 2, and the box door 2 reaches the minimum opening angle; at the same time, the guide block 71 abuts the guide groove 64 and drives the limit block 6 to move toward the inside of the first hinge 4 until it is stopped by the adjusting block 42, and the box door 2 reaches the maximum opening angle. After that, the rotation of the box door 2 is limited within a specific angle range, and the box door 2 will not be completely closed or over-opened, which is convenient for maintenance. The initial positions of the adjustment block 42 and the stop block 52 can be changed by rotating, thereby changing the maximum and minimum opening angles of the door 2. In addition, after pressing the pressure rod 54 toward the inside of the second hinge 5, it will resist the limit block 6 and elastically move toward the first hinge 4, and drive the baffle 62 to move inward. When the baffle 62 no longer engages the stop head 60 from below, the door 2 no longer has a minimum opening angle and can be completely closed downward.

[0031] Furthermore, if Figure 3 and Figure 5As shown, the first hinge 4 also includes a first sleeve 41 threadedly connected to the adjustment block 42, a connecting groove 47 is provided on the first sleeve 41, and a strip block 66 is provided on the inner side of the connecting groove 47. The side of the limit block 6 is provided with a strip groove 46 matching the strip block 66 to prevent the limit block 6 from rotating relative to the first sleeve 41, and a spring 45 elastically connecting the limit block 6 and the first sleeve 41 is provided; the second hinge 5 also includes a second sleeve 51 threadedly connected to the stop block 52, and the second sleeve 51 is provided with a connecting shaft 7 rotatably connected to the connecting groove 47.

[0032] Furthermore, if Figure 4 As shown, an annular groove 61 is further provided on the limit block 6, and the baffle 62 is located on the inner side of the annular groove 61. The stop head 60 on the stop block 52 is inserted into the annular groove 61, and an arc surface 63 is provided on the baffle 62. One side of the stop head 60 is provided with a guide inclined surface 53 facing the bottom of the baffle 62. After the stop block 52 rotates with the second sleeve 51, the guide inclined surface 53 of the stop head 60 will contact the arc surface 63 and push the limit block 6 to move elastically toward the inside of the first sleeve 41 until the stop head 60 passes over the baffle 62. After that, the limit block 6 moves outward under the elastic force, driving the baffle 62 to engage under the baffle 62. Furthermore, the guide groove 64 is provided with a first guide surface 65 extending obliquely, and the guide block 71 is provided with a second guide surface 72 that matches the first guide surface 65, so that the guide block 71 can be integrally inserted into the guide groove 64. After the second hinge 5 rotates relative to the first hinge 4, the first guide surface 65 abuts the second guide surface 72, pushing the limit block 6 toward the inside of the first hinge 4. It should be noted that while the stop head 60 abuts the baffle plate 62 to move the limit block 6 inward, the guide block 71 will not be disengaged from the guide groove 64.

[0033] Furthermore, if Figure 6 As shown, the stop block 52 is further provided with a first slot 56 facing outward, and a positioning block 58 is provided on the outside of the first slot 56, which contacts the stop block 52, so as to prevent the stop head 60 from rotating relative to the second hinge 5 during the inward movement of the baffle 62. The positioning block 58 is provided with a second slot 57 facing outward, wherein the first slot 56 and the second slot 57 are both hexagonal prism-shaped, and an outer sealing plate 59 is provided on the outside of the second slot 57 to separate it from the outside world. After removing the outer sealing plate 59, the stop block 52 and the positioning plate can be rotated through the first slot 56 and the second slot 57.

[0034] Furthermore, the adjusting block 42 is also provided with an adjusting plate 43 located on the outside of the first sleeve 41, and the adjusting plate 43 is provided with a plurality of protrusions 44 arranged in a ring shape. By pressing the protrusions 44, the adjusting plate 43 and the adjusting block 42 can be quickly rotated; one end of the pressure rod 54 passes through the outside of the second sleeve 51, and the other end is provided with a pressure head 55 connected to the center of the limit block 6. When the minimum and maximum opening and closing angles of the door 2 are relatively close, during the process of pressing the pressure rod 54, it may be impossible to press down due to the resistance of the adjusting block 42 to the limit block 6. At this time, the adjusting plate 43 can be rotated outward in advance to pre-space the adjusting block 42 and the limit block 6; a first matching groove 73 for accommodating one end of the stop block 52 is provided on the inner side of the connecting shaft 7, and a second matching groove 74 for accommodating the pressure head 55 is provided on the inner side of the stop block 52.

[0035] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A cable branch box, comprising a box body (1) and a box door (2), wherein the box door (2) is rotatably mounted on the side of the box body (1) via a connecting hinge (3), and is characterized in that: The connecting hinge (3) comprises a first hinge (4) and a second hinge (5) which are rotatably connected. The first hinge (4) is fixedly connected to the box body (1), and the second hinge (5) is fixedly connected to the box door (2). A limit block (6) which is elastically connected to the first hinge (4) in the axial direction and cannot rotate is provided in the first hinge (4). An adjustment block (42) which is threadedly connected to the first hinge (4) is provided at intervals on the inner side of the limit block (6). A baffle (62) and a guide groove (64) are provided on the limit block (6). The second hinge (5) is threadedly connected to the stop block (52). A pressure rod (54) which contacts the stop block (6) is movably provided in the stop block (52). A guide block (71) which is inserted into the guide groove (64) is also provided on the second hinge (5). The box door ( 2) After opening upward, the second hinge (5) rotates relative to the first hinge (4), and the stopper (52) rotates over the baffle (62) and engages above it. At this time, the door (2) has the minimum opening angle. At the same time, the guide block (71) contacts the guide groove (64) and causes the limit block (6) to move toward the inside of the first hinge (4) until it is blocked by the adjustment block (42). At this time, the door (2) has the maximum opening angle. After rotating to change the positions of the adjustment block (42) and the stopper (52), the range of the opening angle of the door (2) changes. After pressing the pressure rod (54) inward, it contacts the limit block (6) and moves toward the inside of the first hinge (4), and drives the baffle (62) to move inward, so that it is no longer engaged by the stopper (52). Then, the door (2) can be completely closed downward. The first hinge (4) further comprises a first sleeve (41), the first sleeve (41) and the adjusting block (42) being threadedly connected, and the limit block (6) being elastically connected to the first sleeve (41) via a spring (45); the second hinge (5) further comprises a second sleeve (51), the second sleeve (51) being threadedly connected to the stop block (52); The first sleeve (41) is provided with a connecting groove (47), the second sleeve (51) is provided with a connecting shaft (7) rotatably connected to the connecting groove (47), a strip block (66) is provided on the inner side of the connecting groove (47), and a strip groove (46) matching the strip block (66) is provided on the side of the limit block (6) to prevent the limit block (6) from rotating relative to the first sleeve (41).

2. The cable branch box according to claim 1, characterized in that: The stop block (6) is further provided with an annular groove (61), the baffle (62) is located inside the annular groove (61), the stop block (52) is provided with a stop head (60) inserted into the annular groove (61), the baffle (62) is provided with an arc surface (63), and one side of the stop head (60) is provided with a guide inclined surface (53) facing below the baffle (62). After the stop block (52) rotates with the second sleeve (51), the guide inclined surface (53) of the stop head (60) will contact the arc surface (63) and push the stop block (6) to elastically move toward the inside of the first sleeve (41) until the stop head (60) passes over the baffle (62), and then the stop block (6) is moved outward by the elastic force, driving the baffle (62) to move and engage below the baffle (62).

3. The cable branch box according to claim 2, characterized in that: A first guide surface (65) is provided in the guide groove (64), and a second guide surface (72) matching the first guide surface (65) is provided on the guide block (71), so that the guide block (71) can be inserted into the guide groove (64) as a whole. After the second hinge (5) rotates relative to the first hinge (4), the first guide surface (65) contacts the second guide surface (72), pushing the limit block (6) to move toward the inside of the first hinge (4).

4. The cable branch box according to claim 3, characterized in that: The stopper (52) is further provided with a first slot (56) facing outwards, and a positioning block (58) is provided on the outside of the first slot (56) to abut against the stopper (52) to prevent the stopper (60) from rotating relative to the second hinge (5) during the inward movement of the stopper (60) against the baffle (62). The positioning block (58) is provided with a second slot (57) facing outwards, and an outer sealing plate (59) is provided on the outside of the second slot (57) to separate it from the outside.

5. The cable branch box according to claim 4, characterized in that: The regulating block (42) is further provided with an regulating plate (43) located outside the first sleeve (41), and the regulating plate (43) is provided with a plurality of protrusions (44) arranged in a ring shape; one end of the pressure rod (54) passes through the outside of the second sleeve (51), and the other end is provided with a pressure head (55) connected to the center of the limit block (6).

6. The cable branch box according to claim 5, characterized in that: A first matching groove (73) for accommodating one end of the stopper (52) is provided on the inner side of the connecting shaft (7), and a second matching groove (74) for accommodating the pressure head (55) is provided on the inner side of the stopper (52).

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